Window-ventilator



J DIXON WINDOW VENTILATOR.

"EPLICATION FILED MAY3|19Z05 1,350,792 Patented Aug. 24, 1920.

UNITED STATES JOHN DIXON, on GARY, INDIANA.

WINDOW-VENTILATOR.

Application filed May 3, 1920.

To all whom it may concern:

' Be it known that I, JOHN DIXON, a citizen of the United States,residing at Gary, in the county of Lake and State of Indiana, haveinvented certain new and useful Improvements in VVindow-Ventilators; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the SELIDQ.

This invention relates to an improved ventilator which is especiallydesigned for use in car windows, although it may be just as effectivelyused in any other type of window.

The main object of the invention is to provide a ventilator which is ofsuch construction that a steady current of air will be supplied throughit to the interior of the car or other place to be ventilated withoutcreating a direct draft.

Another object of the invention is to provide a ventilator which hasmeans for readily and easily securing it in position in the window; one.of which has means for regulating the amount of air passingtherethrough; and one which is provided with means for preventing thepassage of insects, dirt, and cinders through it.

A further object of the invention is to provide a ventilator which ispractically self-cleaning, due to its peculiar shape which, causes asuction to be created within it, thereby forcing or drawing the majorityof particles of dirt and cinders from it when the car is in motion.

Other objects and advantages of the in vention will be apparent duringthe course of the following description.

In the accompanying drawings forming a 'part of this specification andinwhich like numerals are employed to designate like parts throughout thesame:

Figure l is a perspective view of a portion of the interior of a railwaycar or the like, showing my ventilator in use.

Fig. 2 is a transverse sectional view taken on the plane of the line 22of Fig. 1.

Fig. 3 is a central longitudinal sectional view taken on the plane ofthe line 33 of Fig. 2.

In carrying out my invention I employ a box-like member 1 which ispreferably made of a sheet of metal. This sheet of material is bent toprovide a relatively wide top Specification of Letters Patent.

Patented Aug. 24, 1920.

Serial No. 378,486.

wall 2 which is adapted for horizontal dis position, and a comparativelynarrow bot tom wall 3, and an outwardly and downwardly inclined sidewall i. A pair of end walls 5 complete the box. The opposite ends of thesheet of material are bent laterally and inwardly toward each other toprovide hooks which engage the hooks carried by the end walls, thusretaining these parts together. The side opposite the wall a of the boxis entirely open to permit air to pass into the interior of the box fromthe outside. Air escapes from the ventilator box through outlet openings6 which are formed in a top wall 2. Inasmuch as it is not alwaysdesirable to permit free passage of the air through the ventilator boxintothe interior of the car, I provide means to control the amount ofair passing through the box. To this end, I make use of a slide 17 whichis provided with a plurality of openings 8 wnich register with theoutlet openings 6. This slide is mounted for movement in guides 9 whichare suitably secured to the underface of the top wall 2. Movement of theslide will be accomplished by employment of a knob or handle 10. Toprevent the entrance of insects, particles of dirt, and cinders, Iemploy a screen 11, which I secure to the guides 9 in the manner shown.This screen spans the openings 6 and 8 and prevents the passage ofparticles of dirt and insects through these openings. I desire toemphasize the fact, that placing the screen at this particular pointwill be found extremely advantageous, in that it will prevent dirt fromsettling between the slide 7 and the track 9, which might otherwiseprevent the slide from being actuated easily and readily. A simple andeffective means is employed to retain the box in position in the window,this means consisting of hooks 12 which are pivotally connected to theend pieces 5 of the box, the hooked ends thereof being de signed toengage suitable headed members 14 driven in the window frame.

A. ventilator constructed in accordance with my invention will be foundto be extremely eflicient, in that, it will not permit a direct draft toblow on the passengers in the car, this being due to the horizontaldisposition of the top of the boX which causes the air to flowvertically instead of horizontally as it ordinarily does. Insects, andextraneous particles of dirt and the like will be prevented from gainingentrance to the interior of the car. By inclining the side wall of thebox, particles of dirt which gain entrance to the box, will strike itand will be deflected downwardly and settle on the bottom of the box.When the car is in mo tion, the air will create a suction or currentWithin the interior of the box which will force the particles of dirt"out through the open side of the box. In this respect the .box isself-cleaning.

As before stated, the screen also serves another function, that is, itprevents settlement of grit and dirt on the guide-tracks 9 which wouldotherwise prevent easy movement of the slide. The construction isstrong, durable, and inexpensive and is effective in every way.

desire it to be understood that the ventilator box will be made invarious lengths to fit windows of various widths.

myinvention herein shown and described is tobe taken as a preferred formof the same and that various changes 1n the shape, size,

and arrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subjoined claim.

I claim:

A window ventilator comprising an elongated-open-sided box composed of asingle sheet of metal bent to form a rela tively wide top wall, anoutwardly and downwardly inclined side wall and a relatively narrowbottom wall, the latter being disposed in parallelism with the top wallthe opposite ends of said sheet being bent laterally and inwardly towardeach other to fornrcontinuous hooks; end walls for said box made ofmetal plates, each having three of its edges bent to form like hooks forengagement with the first named hooks, said top wall being provided witha plurality of outlet openings to communicate with theinterior of theplace to be ventilated, ledges secured to the underside of the top walladjacent to and on opposite sides of the outlet openings, a slidemovable in said ledges, being provided with openings to register withthe outlet openings, a screen securedto the under faces of the ledgesand spanning the aforesaid openings in the slide and top wall, andpivotally mounted hooks carried by the box to retain it in position in awindow.

In testimony whereof I have'hereunt-o set my hand.

JOHN DIXON.

